OtterRing Web Tools
A growing collection of clean, simple tools for everyday calculations and quick lookups. No sign-ups, no pop-ups — just tools that work.
Date & Time Tools
8 Tools
- Date to Date Days Calculator Day to day — total days, months & years between two dates ›
- Day Addition Calculator Add a number of days to any date ›
- Number of Weekdays Calculator Count Mon–Fri only between two dates ›
- Weekday Addition Calculator Add weekdays to a date, skipping weekends ›
- Countdown to Holidays Days until 100+ holidays worldwide ›
- Astrology & Zodiacs Birthday insights — western sign, Chinese zodiac, moon phase ›
- Pet Age Calculator Human age equivalent for cats, dogs, rabbits & more ›
Finance Tools
Coming Soon
- Compound Interest Calculator Grow savings over time Soon
- Mortgage Calculator Monthly repayments & total interest Soon
- Currency Converter Live exchange rates Soon
- Loan Repayment Calculator Principal, interest & term breakdown Soon
Health Tools
Coming Soon
- BMI Calculator Body mass index with healthy range guide Soon
- Calorie Calculator Daily needs based on age, weight & activity Soon
- Due Date Calculator Pregnancy timeline from conception or LMP Soon
- Sleep Cycle Calculator Best wake-up times based on sleep cycles Soon